THE EFFECT OF WATER VAPOR ON THE LiOH-CO2 REACTION. PART 1. DYNAMIC ISOTHERMAL SYSTEM
Abstract
The role of water vapor (H2O) in the reaction of carbon dioxide (CO2) with lithium hydroxide (LiOH) in a dynamic system was isolated by maintaining an essentially isothermal system through the use of low concentrations of CO2. The LiOH was found to be hygroscopic, with the rate of water pickup directly related to the relative humidity of the feed system. Hydration to the monohydrate (LiOH-H2O) proved to be a necessary precursor to the CO2 reaction but the rate of hydration must not exceed the rate of carbonation if high efficiencies are to be realized. The controlled rate of hydration is necessary in order to maintain the high surface area and porosity of pelletized LiOH. The previously accepted equation, 2 LiOH + CO2 yielding Li2CO3 + H2), thus becomes the summation of the two-step reaction, 2 LiOH + 2 H2O = 2 LiOH.H2O and 2 LiOH.H2O + CO2 yielding Li2CO3 + 3H2O.
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 29, 1969
- Accession Number
- AD0698118
Entities
People
- D. D. Williams
- Roman R. Miller
Organizations
- United States Naval Research Laboratory